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 $D406/54278/SID+6:   Voice 1: Sustain / Release Cycle Control

   +----------+---------------------------------------------------+
   | Bits 7-4 |   Select Sustain Cycle Duration: 0-15             |
   | Bits 3-0 |   Select Release Cycle Duration: 0-15             |
   +----------+---------------------------------------------------+

   <B>This register is write-only!</B>

   See also: <A HREF="SIDADR.HTM">ADR-Rates</A>

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